Apparatus eor heating and purifying the feed-water of steam-boilers



N.PErERS. PHOTD LTHOGR WASHINGTON D C UNITED STATnlllndTEN T QFFICE.

JACOB GUHMANN, OF ROCHESIIIR, NEW' YORK.

APPARATUS FOR HEATING AND PURIFYING THE FEED-WATER OF STEAM-BOILERS.

Specification of Letters Patent No. 23,244, dated March 15, 18.59.

To all whom it may concern:

Be it known that I, .IAcon GUILMANN, of Rochester, in the county of Monroe and State of New York, have invented a new and Improved r-tpparatus for Heating the Feed-rater of Locomotive-Boilers; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings. making part of this specifi lation, in which- Figure l, is a front elevation of the boiler. Fig. 2. a` vertical section thereof on the line of Fig. 3. Fig. 3, an elevation of the fire box and a portion of the boiler with one side broken away on the line g/ y/ of Fig. 2, to show the apparatus. Fig. 4, is a vertical section of one of the side pipes D. Fig. a sectional yiew of the cock I, tube D, and water space C.

Similar letters refer to corresponding parts in all of the figures.

My invention is designed especially for the boilers of locomotive engines, and has for its object the prevention of mud and other impurities from entering the same, and the partial heating of the water before its admission to the boiler.

In Fig. Q, which represents the fire-box A, boiler B. and water space` C. surrounding the lire-box, the interior portion of my apparatus is shown. It consists of a bent tube, D, which receives the water from the feed pump at E. at an elevated part of the boiler, and extends alongl one of the upper side angles of the fire box, (as seen in Fig'. 3.) till it reaches the front plate, where it is bent downward. following a vertical angle to prevent seriously interfering with the fire space, then horizontally7 across the front of the fire-box. rising at the opposite side in precisely the form and position previously described, and terminating in an outlet. into the water space at F, direct-ly opposi te the point where the water is admitted.

The front horizontal portion, D. is constructed so as to be easily detached from the other sections. being held together by the screw rods and nuts a and Y), the joints c c heilig spherically formed. and ground together to insure a perfect fitting. This part is termed the gross pipe. being the chief receiver of the impurities of the water, which, from their greater gravity. become deposited in it from both the descending' and ascending columns in D D. A blow-off cock, G, is provided in this, by turning which, the pump being stopped the meanwhile, the pressure of steam in the boile acting through the water in the pipes D D, will force the sediment out without waste of water from the boiler, and with only a small portion of that contained in the pipe. If any scale or hard deposit forms in the gross pipe which resists the force of the steam it can be more thoroughly cleaned by detaching it as before described. All the water is thus passed directly through the fire-box, and from the great length of the pipe, becomes so much heated before entering the boiler as to effect an important saving of fuel. The heat thus attained. and distance traversed cause the impurities held in solution to be precipitated to the lowest part of the pipe, which is favored by its Siphon shape.

I further provide two cocks, one situated at H, near the point of induction, and the other at I, in the gross pipe. These pass through the water space C, and enter the pipes D D (see transverse section, Fig. 5,) communicating with both. Th'e stem is tubular from the end to the slots m, the former opening into the pipes D, the latter into the water space C, through slots corresponding with mi. These cocks are kept closed while water is being fed to the boiler, but when the pump ceases to act, the cocks II, and I, are simultaneously opened and the water, being more dense at the lower cock, I, flows through it from the water space C, into the gross pipe` ascending4 thence through both branches of D, and reentering the boiler again at the discharge point f, and through the open cock H. This prevents any difficult-y from the formation of steam in the pipe D. which is liable to occur when the pump is stopped for any length of time. as the Vwater heats more rapidly in the pipes than in the boiler. The rarefication of the water in D. causes it to ascend and its place is supplied through the lower cock I, thus establishing currents which maintain an equilibrium in the heated water. The red arrows on the drawing indicate the course of the water when the pump is not working, and I and H open, and the black the course which it pursues while the pump is operating. The valves of cocks I and II, are each connected with a hand lever K, on the outside of the boiler, and within convenient reach of the engineer, by means of a connecting rod and crank Z fw,

and crank n bent rod 0 and cranklever p Figs. l and 3, which cause them to open and close simultaneously by the movement of the lever.

Q is a hand lever or handle for turning the blow-off cock Gr.

The pipe is so arranged as to receive the greatest heat of the fire-box Wit-hout encroaching much upon its space; and the apparatus being entirely under the control of the engineer, it is an economizer of heat, a security against' explosions, and of still greater importance as an effectual means of keeping' the boiler free from impurities and sediment, and thereby saving the enormous expense of opening or dissecting it for the purpose of cleaning, as has frequently to be done.

I am aware that various methods have been employed for heating the Water in pipes before entering the boiler and this alone I do not claim, but

What I claim as my invention, and desire to secure by Letters Patent, is

The combinationand arrangement of the bent siphon shaped tube D, constructed as described, having the induction and eduction openings at the highest parts thereof, With loW receiving portion D, whereby the Water is made to pass a considerable space of vertical pipe the more efectually to deposit itsimpurities in D', both While descending and ascending, together with the waste cock G and conjoined cocks I I-I, lever K, and connecting rods and cranks as described, for simultaneously opening and closing the same; the Whole constructed and operating substantially as and for the purposes herein set forth.

- JACOB GUHMANN.

Witnesses:

Y J. FRASER,

S. J. ALLIS. 

